Suspend SC would be a great choice as an exterior spray for roaches and ants but should not be the sole product for treatment. We recommend mixing an IGR with Suspend SC and also baiting for roaches and ants. Please click the links below for product recommendations.
Roach Bait- http://www.domyownpestcontrol.com/roach-bait-c-2_68.html
Ant Bait-http://www.domyownpestcontrol.com/ant-baits-c-1_60.html
IGR-http://www.domyownpestcontrol.com/growth-regulators-igrs-c-237.html
Suspend SC is not a contact kill. It does take some time to effect the german roach. This product should not be the sole treatment for this species of roaches. Please click on the link below for additional information on treating german roaches.
If your pet eats insects that were killed by Suspend SC, there is only enough product for it to kill the insect in touches so there is a reduced risk for your pet. They will have to consume quite a few to be affected by the dead pests.
If you pet does show any signs of illness, we would recommend that you contact a veterinarian.
We would recommend using Cyper WP. This can be sprayed around the baseboards and cracks and crevices indoors. Outdoors, you will spray around the perimeter of your home. You will use two scoops per gallon of water. This is residual product and will work for up to 3 months indoors and 30 days outdoors. It can leave a powdery residue because it is a wettable powder. Once Cyper WP is dry, it is safe for pets and children to come into the rooms that were sprayed.
If you are wanting something that will dry clear, we would recommend using Suspend SC. You will use this around the cracks and crevices indoors and around the perimeter outdoors. You will use 0.75-1.5 fl. oz. per gallon of water. Once Suspend SC is dry, it is safe for children and pets to return to the area.
Both of these products will kill and keep killing the spiders.